I agree with you that this is not a game I would spend time trying to solve upfront. Other than the acceptability question, there are only four questions, and I’d prefer to just dive into them pretty quickly. One other reason I wouldn’t spend too much time up front trying to solve the game is the “either/or” rules. Typically, the “limited options” or game solving approach tends to work better when the rules are more definite; that’s when you can really draw some inferences. As for question 5, specifically, here’s what I’d do:
1) Scan all past layouts; any answer choice that matches something you have already created in a valid layout must be wrong – you’ve already shown that it could be true.
2) Work through any remaining answer choices focusing on the G/L rule, which should make it not too time consuming. Rules that dictate that people must be in the same group are very helpful. For instance:
A) The driver must be L, the only person G can be in a car with. That leaves F, H, J, and K in the other car, and the only rules left are the ones about drivers. If F drives, that’s ok, so A is wrong.
B) The car that H is not in contains G and L (no room in H’s car). So H’s other person must be F (G is in the other car). That puts G, J, K, and L in the other car. That’s fine if K drives.
C) J’s other person must be F or K. Either is fine, if G drives the other car, which includes L, H, and the other of F or K.
D) G and L are in the car that K is not in.
(continued) J and K can’t be together, because the answer choice would make J the driver, but the second rule says that K would have to be the driver. So J is with G and L.
(continued) Per the first rule, H would also have to be in the car with G and L – K can’t drive H’s car.
That only leaves F as the person who could be in K’s car. But if F and K are alone together, we’re violating the second rule.
(E) is the same as (A) – G and L are in one car together. It doesn’t matter who drives it. As long as F drives the other car, everyone is happy.
Focusing on the most limiting rule (the G/L rule) makes working through this question not as cumbersome as it might have seemed. All of the rules always apply, but they’re pretty much never all equally important. Identifying and focusing on the more important rules is a very useful skill on the LSAT.